package org.mysterylab.utopiaframework.commons.security.jcaptcha;

import java.awt.Color;
import java.awt.Font;
import java.awt.image.ImageFilter;

import com.octo.captcha.component.image.backgroundgenerator.BackgroundGenerator;
import com.octo.captcha.component.image.backgroundgenerator.UniColorBackgroundGenerator;
import com.octo.captcha.component.image.color.RandomListColorGenerator;
import com.octo.captcha.component.image.deformation.ImageDeformation;
import com.octo.captcha.component.image.deformation.ImageDeformationByFilters;
import com.octo.captcha.component.image.fontgenerator.FontGenerator;
import com.octo.captcha.component.image.fontgenerator.RandomFontGenerator;
import com.octo.captcha.component.image.textpaster.DecoratedRandomTextPaster;
import com.octo.captcha.component.image.textpaster.TextPaster;
import com.octo.captcha.component.image.textpaster.textdecorator.TextDecorator;
import com.octo.captcha.component.image.wordtoimage.DeformedComposedWordToImage;
import com.octo.captcha.component.image.wordtoimage.WordToImage;
import com.octo.captcha.component.word.FileDictionary;
import com.octo.captcha.component.word.wordgenerator.ComposeDictionaryWordGenerator;
import com.octo.captcha.component.word.wordgenerator.WordGenerator;
import com.octo.captcha.engine.image.ListImageCaptchaEngine;
import com.octo.captcha.image.gimpy.GimpyFactory;

/**
 * JCaptcha 验证码图片生成引擎, 该引擎生成类似 GMail 验证码的样式.
 * 
 * @author zhouych
 */
public class GMailEngine extends ListImageCaptchaEngine {

	@Override
	protected void buildInitialFactories() {
		int minWordLength = 4;
		int maxWordLength = 5;
		int fontSize = 50;
		int imageWidth = 250;
		int imageHeight = 100;
		
		// 字词生成器
		WordGenerator dictionaryWords = new ComposeDictionaryWordGenerator(
				new FileDictionary("toddlist"));
		
		// 字词转换成图片
		TextPaster randomPaster = new DecoratedRandomTextPaster(minWordLength, 
				maxWordLength, new RandomListColorGenerator(new Color[] {
						new Color(23, 170, 27),
						new Color(220, 34, 11),
						new Color(23, 67, 172)
				}), new TextDecorator[] {});
		BackgroundGenerator bgGenerator = new UniColorBackgroundGenerator(imageWidth,
				imageHeight, Color.WHITE);
		FontGenerator fontGenerator = new RandomFontGenerator(fontSize, fontSize,
				new Font[] {
				new Font("nyala", Font.BOLD, fontSize),
				new Font("Bell MT", Font.PLAIN, fontSize),
				new Font("Credit valley", Font.BOLD, fontSize)
		});
		
		ImageDeformation postDef = new ImageDeformationByFilters(new ImageFilter[] {});
		ImageDeformation backDef = new ImageDeformationByFilters(new ImageFilter[] {});
		ImageDeformation textDef = new ImageDeformationByFilters(new ImageFilter[] {});
		
		WordToImage word2image = new DeformedComposedWordToImage(fontGenerator,
				bgGenerator, randomPaster, backDef, textDef, postDef);
		addFactory(new GimpyFactory(dictionaryWords, word2image));
	}

}
